SBR工藝污水處理廠升級改造工程的優化設計

摘要: 摘要:在分析某污(wu)水(shui)(shui)處(chu)(chu)理(li)(li)廠(chang)原(yuan)(yuan)有SBR工(gong)藝設(she)(she)計參(can)數和實際運(yun)行(xing)情況的(de)(de)基(ji)礎上,通過升級(ji)改(gai)造,使出水(shui)(shui)水(shui)(shui)質由原(yuan)(yuan)一級(ji)B標準(zhun)提高(gao)至一級(ji)A標準(zhun),且系統(tong)能耗下降(jiang)了80 kW.h/103m3,可為(wei)當前采用SBR工(gong)藝的(de)(de)污(wu)水(shui)(shui)處(chu)(chu)理(li)(li)廠(chang)升級(ji)改(gai)造提供參(can)考(kao)。  關鍵詞:SBR工(gong)藝,升級(ji)改(gai)造,脫氮除磷 1污(wu)水(shui)(shui)處(chu)(chu)理(li)(li)廠(chang)運(yun)行(xing)現狀 為(wei)使出水(shui)(shui)水(shui)(shui)質滿足《城鎮污(wu)水(shui)(shui)處(chu)(chu)理(li)(li)廠(chang)污(wu)染物排放標準(zhun)》(GB 18918—2002)的(de)(de)一級(ji)A標準(zhun),某二級(ji)污(wu)水(shui)(shui)處(chu)(chu)理(li)(li)廠(chang)(規(gui)模(mo)(mo)為(wei)5×104m3/d,出水(shui)(shui)水(shui)(shui)質執行(xing)一級(ji)B標準(zhun))進行(xing)了升級(ji)改(gai)造。工(gong)藝流(liu)程(cheng)(cheng)分別見(jian)圖(tu)1、2。圖(tu)1一期(qi)(qi)工(gong)程(cheng)(cheng)工(gong)藝流(liu)程(cheng)(cheng)F ig.1 F low chart of wastewater treatm ent process infirst stage project圖(tu)2二期(qi)(qi)工(gong)程(cheng)(cheng)工(gong)藝流(liu)程(cheng)(cheng)F ig.2 F low chart of wastewater treatm ent process insecond stage project該(gai)污(wu)水(shui)(shui)處(chu)(chu)理(li)(li)廠(chang)分兩期(qi)(qi)建(jian)設(she)(she),一期(qi)(qi)工(gong)程(cheng)(cheng)建(jian)設(she)(she)規(gui)模(mo)(mo)為(wei)2×104m3/d,采用厭氧水(shui)(shui)解/SBR工(gong)藝;二期(qi)(qi)工(gong)程(cheng)(cheng)建(jian)設(she)(she)規(gui)模(mo)(mo)為(wei)3

摘要:在分析某(mou)污水(shui)處理廠原有SBR工(gong)藝設計參(can)數和實際運行情(qing)況的(de)(de)基礎上,通過升級改造,使出(chu)水(shui)水(shui)質由(you)原一級B標準提高至一級A標準,且系統能耗(hao)下降(jiang)了80 kW.h/103m3,可(ke)為當前采(cai)用SBR工(gong)藝的(de)(de)污水(shui)處理廠升級改造提供參(can)考。 

關鍵詞(ci):SBR工(gong)藝(yi),升級(ji)改造,脫氮(dan)除磷

1污水處理(li)廠運行現(xian)狀

為使出水(shui)(shui)(shui)水(shui)(shui)(shui)質(zhi)滿足《城鎮污(wu)(wu)水(shui)(shui)(shui)處(chu)(chu)理(li)廠(chang)污(wu)(wu)染物排放標準》(GB 18918—2002)的一(yi)級(ji)(ji)A標準,某二級(ji)(ji)污(wu)(wu)水(shui)(shui)(shui)處(chu)(chu)理(li)廠(chang)(規模(mo)為5×104m3/d,出水(shui)(shui)(shui)水(shui)(shui)(shui)質(zhi)執行一(yi)級(ji)(ji)B標準)進(jin)行了升(sheng)級(ji)(ji)改造。工(gong)藝(yi)(yi)流程(cheng)(cheng)分別見(jian)圖1、2。圖1一(yi)期工(gong)程(cheng)(cheng)工(gong)藝(yi)(yi)流程(cheng)(cheng)F ig.1 F low chart of wastewater treatm ent process infirst stage project圖2二期工(gong)程(cheng)(cheng)工(gong)藝(yi)(yi)流程(cheng)(cheng)F ig.2 F low chart of wastewater treatm ent process insecond stage project該污(wu)(wu)水(shui)(shui)(shui)處(chu)(chu)理(li)廠(chang)分兩期建設,一(yi)期工(gong)程(cheng)(cheng)建設規模(mo)為2×104m3/d,采用(yong)厭氧(yang)水(shui)(shui)(shui)解(jie)/SBR工(gong)藝(yi)(yi);二期工(gong)程(cheng)(cheng)建設規模(mo)為3×104m3/d,采用(yong)厭氧(yang)水(shui)(shui)(shui)解(jie)/P-SBR工(gong)藝(yi)(yi)。

目前,該污水廠出水水質可以達到一級B標準,根據一級A標準相關水質指標,按污水處理廠目前的運行狀況需要調整的地方有:①進水BOD5/TKN較低,碳源不足,系統的反硝化能力難以提高,對TN的去除率較低;②一期工程供氣量偏低;③進水pH值較低,反硝化所需堿度不足;④原二期工程P-SBR池缺氧反硝

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